package com.mmall.util;

import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Properties;

import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

//properties文件读取工具
public class PropertiesUtil {

	private static Logger logger = LoggerFactory.getLogger(PropertiesUtil.class);
	
	private static Properties props;
	
	static {
		String fileName="mmall.properties";
		props=new Properties();
		try {
			//通过maven部署时直接“fileName”代表文件在resources目录下
			props.load(new InputStreamReader(PropertiesUtil.class.getClassLoader().getResourceAsStream(fileName),"UTF-8"));
		} catch (IOException e) {
			logger.error("配置文件读取异常",e);
		}
	}
	
	public static String getProperty(String key){
		
		String value=props.getProperty(key.trim());
		if(StringUtils.isBlank(value)){
			return null;
		}
		return value.trim();
	}
	
	public static String getProperty(String key,String defaultValue){
		
		String value=props.getProperty(key.trim());
		if(StringUtils.isBlank(value)){
			value=defaultValue;
		}
		return value.trim();
	}
	
}
